I followed NTAC's KB instructions for uploading a wav file to the 2100 for a MOH message. Tried it out and the caller on hold heard the wav file message. At least on the first attempt. After that, the held caller heard the standard radio input. After the first succesful attempt, I was showing the customer how to log in to change to another wav file. Then we started getting the regular radio moh and not our wav file.

I've double checked everything, but have missed something. Has anyone used this? Thanks.

Jim